Effects of quenching temperature on microstructure and mechanical properties of H13 mandrel steel

查看全文 作　　者：TIAN [1,2]Yuxin;LU [1]Minghe;CAI [1]Haiyan;YIN [1]Guanghong;XU [2]Zhou

机构地区：[1]Tube & Pipe Technology Center, Research Institute, Baoshan Iron & Steel Co. , Ltd. , Shanghai 201900, China;[2]Shanghai Jiao Tong University, Shanghai 200030 ,China

出　　处：《Baosteel Technical Research》索引2010年第4卷第3期,共7页

摘　　要：Optical microscope,stereomicroscope,scanning electronic microscope (SEM) and mechanical property testing were used to research the effects of different quenching temperatures on the microstructure and mechanical properties of the H13 mandrel steel.The results indicate that following an increase in the quenching,the degree of alloying is enhanced due to the carbides dissolving gradually in austenite,which improves the hardenability of the specimens,as well as their room and high-temperature strength.At the same time,the fracture toughness increases due to the increment of the martensite number and the interparticle distance of the carbides.However,extremely coarse grain and martensite can decrease the impact toughness.Optimal performance can be obtained after quenching at 1060℃ and double tempering at 620℃.Consequently,the service life of the H13 mandrel steel is extended significantly. 关键词：力学性能测试淬火温度芯棒钢 H13 显微组织扫描电子显微镜光学显微镜体视显微镜

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Effects of quenching temperature on microstructure and mechanical properties of H13 mandrel steel

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